Landscaping License Practice Test

Which frequency range is acceptable when compacting concrete pavers?

1. 50 to 60 hz

2. 60 to 75 hz

3. 75 to 100 hz

4. 100 to 120 hz

The correct answer is: 75 to 100 hz

The frequency range of 75 to 100 hertz is optimal for compacting concrete pavers because it effectively delivers the vibrational energy needed to settle the pavers properly without causing any damage to the material. At this frequency range, the compacting equipment is able to displace air and ensure that the pavers interlock seamlessly, creating a stable and durable surface. This frequency allows for adequate penetration into the substrate beneath the pavers, promoting better compaction and reducing the risk of settling or shifting over time. Equipment operating within this frequency range strikes a balance, providing sufficient compaction force without exerting excessive vibration that could lead to fracturing of the pavers or excessive wear on the equipment. Understanding the dynamics at play in the compaction process is crucial for achieving the best results in landscaping and paving projects. Employing the correct frequency helps to ensure the longevity and integrity of the installation, which is a key consideration in achieving professional-quality work.